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TDC-GP30-F01 Ultrasonic Flow Converter

Firmware supported intelligent ultrasonic flow converter


  • High performance and ultra-low power 32-bit CPU
  • Advanced high-precision analog part
  • Transducers can be connected directly to GP30, no external components required
  • Firmware for calculation of flow, volume and temperature, including linearization and two-point calibration
  • Firmware adopts automatically to zero flow (2Hz) or flow (8Hz) condition
  • Error handling, bubble detection


  • Lowest power solution for ultrasonic water meters
  • On-chip firmware allows fastest time-to-market
  • Best measurement performance for leakage detection

Product parameters

Analog Frontend Yes
First Wave Detection Yes
Amplitude Measurement Yes
Number of Hits 31
Resolution [ps] 11
Operating Supply Range 2.5 to 3.6
Interface SPI, UART, Pulse
CPU 32-bit
Firmware Volume, flow, and temperature calculation
Memory 4k NVRAM, 4k ROM
Ambient Temperature Range [°C] -40 to +125
Package QFN32, QFN40

General Description

TDC-GP30-F01 is a complete ultrasonic flow metering solution, including the flow calculation. It drastically simplifies the design of ultrasonic heat and water meters and is the necessary step for compact energy-saving ultrasonic water meters. The ultra-low current capabilities allow the use of standard 2/3 AA or AA lithium thionyl chloride batteries at 6-8 Hz measuring frequency even in the water meter version. The TDC-GP30-F01 firmware does the linearization and temperature compensation based on spool piece specific calibration data and completes the system-on-chip approach. The latest software can be downloaded here:

This product suits for the following applications:

  • Non-invasive cold water meter


Title Category Headline Buy
TDC-GP30-F01 DemoKit Application Board GP30-DEV-KIT

Technical Documents

Name Type Description Version Language
TDC-GP30_TDC-GP30-F01_AN000511_1-00.pdf Application Note TDC-GP30 UART Communication 1-00 English
TDC-GP30_AN000565_1-00.pdf Application Note Vol. 3 User Manual 1-00 English
TDC-GP30-F01_AN000536_1-01.pdf Application Note Toggling GPIO pin of GP30-F01 using open firmware section 1-01 English Application Note Toggling GPIO pin of GP30-F01 using open firmware section and ASM Source Code 1-00 English
TDC-GP30_BD000307_1-00.png Block Diagram TDC-GP30 Block Diagram 1-00 English
TDC-GP30_DS000391_2-00.pdf Datasheet Volume 1 (General Description); 0.2 2-00 English
TDC-GP30_DS000392_1-00.pdf Datasheet Volume 2 (CPU, Memory, Firmware); 0.0 1-00 English
TDC-GP30_FS000213_1-00.pdf Factsheet Building Static Water Meters of High Quality 1-00 English
TDC-GP30-F01_PD000309_1-00.png Other Product Document TDC-GP30-F01DemoKit Image 1-00 English
TDC-GP30_QG000115_1-00.pdf Quick Start Guide Development Kit 1-00 English
TDC-GP30_TDC-GP30-F01_UG000360_1-00.pdf User Guide TDC-GP30-EVA-KIT Standard Board Manual 1-00 English
TDC-GP30-F01_UG000403_1-00.pdf User Guide 1-00 English

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